Python3 File readlines() Method
Python3 File MethodsOverview
readlines()The method is used to read all lines (until the end-of-file marker EOF) and return a list, which can be processed by Python's for... in ... structure. If the EOF marker is encountered, an empty string is returned.
If the EOF marker is encountered, an empty string is returned.
Syntax
The syntax of the readlines() method is as follows:
fileObject.readlines( );
Parameters
-
None.
Return Value
Returns a list containing all the lines.
Example
The following example demonstrates the use of the readline() method:
The content of the file example.txt is as follows:
1:www.example.com 2:www.example.com 3:www.example.com 4:www.example.com 5:www.example.com
Read the content of the file in a loop:
Example (Python 3.0+)
#!/usr/bin/python3
# Open the file
fo = open("example.txt", "r")
print ("The file name is:", fo.name)
for line in fo.readlines(): # Read each line in sequence
line = line.strip() # Remove whitespace at the beginning and end of each line
print ("The data read is: %s" % (line))
# Close the file
fo.close()
The output result of the above example is:
文件名为: example.txt 读取的数据为: 1:www.example.com 读取的数据为: 2:www.example.com 读取的数据为: 3:www.example.com 读取的数据为: 4:www.example.com 读取的数据为: 5:www.example.com
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